Anyway, I got 3 achievements in Wheelman today, for some reason Xbox Live connection was dropped while I was playing and 2 achievements I got when there was no connection. And like I ranted before, xbox.com shows them as obtained who-knows-when. Bad Microsoft, BAD!!! :(
The good thing is that I finished Wheelman main story and got the "Real Wheelman" 50G achievement. Now all I need to do is the side-missions.